City officials hope the work, scheduled to conclude Friday, will keep the Mokelumne riverbank stable long enough to find money for permanent repairs.

The area, which protects the park and its wildlife from the river, is severely eroded. It's just a small strip separating the Mokelumne and a little body of water called Pig's Lake. In some places, there are only a few feet of bank left between the river and lake.

The repair work cost the city about $5,000 in materials and labor, city spokesman Jeff Hood said. A permanent fix, however, could cost as much as $1.6 million, officials have estimated. There currently are no funds for permanent work, but the city has applied for state grants.

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